CVE-2026-18264 NoMachine getstat Command Injection Remote Code Execution Vulnerability
Remote attackers with authentication can execute arbitrary code via command injection in the NoMachine web service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18264?
CVE-2026-18264 is a high-severity command injection vulnerability in NoMachine, published on 20 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
NoMachine getstat Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of NoMachine. Authentication is required to exploit this vulnerability.
The specific flaw exists within the web service, which listens on TCP port 4000 by default. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the service account. . Was ZDI-CAN-30634.
Weakness: CWE-78
Which versions are affected by CVE-2026-18264?
How do I fix CVE-2026-18264?
No fix has been published for CVE-2026-18264 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-18264 being exploited?
There is no known exploitation of CVE-2026-18264 in the wild and no public exploit code.
Sources
Also known as GHSA-wx22-7c2v-g5hw.